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190207 A cuboid container is made of plastic. The length, width and height of the cuboid cavity inside are x, y and z respectively. The thickness of the six sides is 1. What's the volume of the plastic used to make this container?
Manhattan If x + y = 7 and x – y = 3, then $$x^{2} - y^{2} =$$
OG16 OG17 OG18 OG19 OG20 OG2022 If (1 – 1.25)N = 1, then N =
Manhattan Set S contains 4 numbers. The average of set S is 12. Exactly one number is added to set S, lowering the average of set S to 10. What is the number that was added to set S?
190113 The equation $$x^{2}$$+(m+4)x- $$(n+2)^{4}$$ has only one solution. mn=？
Magoosh Working together, 7 identical pumps can empty a pool in 6 hours. How many hours will it take 4 pumps to empty the same pool?
The cost of an air conditioner is b dollars more than 3 times the cost of a radio. The total of an air conditioner and a radio is v dollars. Which of the following is the cost of an air conditioner, in dollars?
300难题 If each side of △ACD above has length 3 and if AB has length 1, what is the area of region BCDE?
OG12 OG15 OG16 OG17 OG18 The sum $$\frac{7}{8}+\frac{1}{9}$$ is between
190124 y=x+$$\frac{1}{x}$$-1(x≠0) .How to express x with y?
OG17 OG18 The chart depicts the organizational structure of the government of City C. Currently, 5 departments report directly to the City Manager, and each department consists of 2–5 agencies. Due to budgetary concerns, the government will be restructured as follows. The Human Resources Department and its agencies will be eliminated. Payroll will be moved to the Finance Department where it will be part of a single agency created by consolidating Accounting and Collections; Building Maintenance responsibilities will be transferred to Engineering. The Police and Fire Departments will be consolidated into a single department, and Prevention and Suppression will be merged into a single agency of that consolidated department.From the drop-down menus, select the options that create the most accurate statement based on the information provided.GMAT、gmat题库、gmat模考、gmat考满分2A. As a result of the restructuring, a total of departments will report to the City Manager, and the maximum number of agencies per department will be
Magoosh The entire contents of a full sack of flour can be used to make 15 cupcakes and 8 pizzas. The same full sack of flour can be used to make 7 cupcakes and 14 pizzas. If a full sack of flour is used to make only pizzas, how many pizzas can be made?
190603 There is originally a mixture of 9 liters of x and water, with water accounting for 75%. How much water was poured and replaced with same amount of x, and the final volume of water accounted for 50%?
190215 (n+1)(n+2)(n+3)(n+4)=?
300难题 OG20 If n > 4, what is the value of the integer n ? 1. $$\frac{n!}{(n-3)!}$$ =$$\frac{3!n!}{4!(n-4)!}$$ 2. $$\frac{n!}{3!(n-3)!}$$ +$$\frac{n!}{4!(n-4)!}$$ =$$\frac{(n+1)!}{4!(n-3)!}$$
Magoosh If the hypotenuse of an isosceles right triangle has length of 8, then the area of the triangle is
OG18-数学分册 A positive integer n is a perfect number provided that the sum of all the positive factors of n, including 1 and n, is equal to 2n. What is the sum of the reciprocals of all the positive factors of the perfect number 28 ?
OG19-数学分册 A positive integer n is a perfect number provided that the sum of all the positive factors of n, including 1 and n, is equal to 2n. What is the sum of the reciprocals of all the positive factors of the perfect number 28 ?
OG19-数学分册 The points R, T, and U lie on a circle that has radius 4. If the length of arc RTU is $$\frac{4\pi}{3}$$ , what is the length of line segment RU?
190321 The line $$l_1$$ is perpendicular to the line $$l_2$$, whose equation is y=3x+4. What is the slope of $$l_1$$?